Transitioning the sticky product image to a sticky Add to Cart bar aimed to improve conversion rates by keeping purchase options visible during scrolling.
Sticky Product Customization Below The Fold


If we add a sticky Customization bar once the user scrolls past the first fold, then the conversion rate will increase because users will have a clear and accessible path to purchase, reducing friction during deep PDP browsing.
What We Changed
- Added sticky customization bar
- Ensured smooth transition to sticky customization bar.
- Positioned the sticky bar at the bottom of the screen.
The Results
We dig through every data source to map what's actually broken. By the end, there's no confusion.
Click-through rate change
Change in amount of clicks
visitors
Key Learnings
- The sticky bar improved visibility but did not translate to higher conversions.
- Increased click-through rates suggest more interaction but may not lead to purchases.
- Reduced bounce rate indicates higher engagement but not necessarily higher sales.
- Keeping purchase options visible was not enough to overcome other barriers to conversion.
Detailed results breakdown
Add-to-cart rate change
-10.2%
Average order value
-2.9%
Click-through rate change
+13.8%
Lift in conversion rate
-14.4%
Change in revenue per visitor
-17.1%
Start with 3 experiments.
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30,000+ Monthly sessions.
Minimum traffic needed to run statistically significant tests.
Running on Shopify or Shopify Plus.
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Investing in paid traffic.
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+3.80% (ACR) ACR

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Top Mobile Sticky Add-To-Cart
Discover how moving the sticky "Add to Cart" button to the top of the page impacted user engagement and sales metrics.
+16.4% Conversion rate

Product Page (PDP)
Mobile Layout Optimization for AOV
Discover how mobile layout changes drove a 43.2% increase in average order value but came at the cost of conversion rate.
-28.29% (CVR) CVR